HTTP/1.1 200 OK
Content-Type: text/html; charset=utf-8
Date: Sun Jul 23 22:32:34 CST 2017
Server: YLW

<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
Hello I'm from HttpServer

因为Response里面没有封装，所以需要在文件里面自己手动添加
</body>
</html>